GENERAL DESCRIPTION
The AD7091R is a 12-bit successive approximation analog-to-digital converter (ADC) that offers ultralow power consumption (typically 349 µA at 3 V and 1 MSPS) while achieving fast throughput rates (1 MSPS with a 50 MHz SCLK). Operating from a single 2.7 V to 5.25 V power supply, the part contains a wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 7 MHz. The AD7091R also features an on-chip conversion clock, accurate reference, and high speed serial interface.

FEATURES
   Fast throughput rate of 1 MSPS
   Specified for VDD of 2.7 V to 5.25 V
   Logic voltage VDRIVE of 1.65 V to 5.25 V
   INL of ±1 LSB maximum
   Analog input range of 0 V to VREF
   Ultralow power
      349 µA typical at 3 V and 1 MSPS
      264 nA typical at 3 V in power-down mode
   Internal 2.5 V reference, ±4.5 ppm/°C typical drift
   Wide input bandwidth
   Flexible power/throughput rate management
   High speed serial interface
      SPI®/QSPI™/MICROWIRE™/DSP compatible
   BUSY indicator
   Power-down mode
   10-lead, 3 mm × 2 mm LFCSP and 10-lead MSOP packages
   Temperature range of −40°C to +125°C
  
APPLICATIONS
   Battery-powered systems
      Handheld meters
      Medical instruments
      Mobile communications
   Instrumentation and control systems
   Data acquisition systems
   Optical sensors
   Diagnostic/monitoring functions
   Energy harvesting